After the War of Wrath at the beginning of the Second Age many of the Sindar of Beleriand migrated eastward. The Elves of Lórien welcomed them. The coming of the Sindar was a great boost to the power and culture of the Silvan Elves. The Silvan language was replaced by Sindarin.

The arrival of one in particular affected them: the Sinda Amdír took over Lórien. Under his leadership the people of Lórien prospered and their numbers grew. Amdir led an army of Galadhrim to the War of the Last Alliance, where most of them, including Amdír himself, were slain in the Battle of Dagorlad.

In her wisdom Galadriel saw that Lórien would be a stronghold and a point of power to prevent the shadow from crossing the Anduin, for the Galadhrim were hardy and valiant. But they needed a ruler of greater strength and wisdom than they possessed. That is why Galadriel and Celeborn took up their permanent abode in Lórien and its government. Under the leadership of Galadriel and Celeborn the Galadhrim prospered and their skill grew.

The Galadhrim defended their home against orcs, who attacked around the end of the Third Age, just before Sauron was destroyed. The Galadhrim weathered all of the attacks.

With the departure over Sea of Galadriel, most of the Galadhrim went with Celeborn to East Lórien.

The Galadhrim prospered and were instructed under their Sindarin rulers, and afterwards by their Lord and Lady. They became proficient in making Lembas, Elven rope, Elven-cloaks and many other crafts. They lived in telain built in the trees.